Sandhill Company leases a machine that stuffs, seals, and stamps envelopes in one process. Sandhill's lease agreement calls for a base charge of $4,860 per year plus $0.29 for every envelope over 2,000 the machine processes per month. (a) Your answer has been saved. See score details after the due date. What is the firm's total annual cost for the lease if a total of 3,500 envelopes are processed each month? $ 10080 Attempts: 1 of 1 used (b) What is the firm's total processing cost per envelope at a level of 3,500 envelopes processed each month? (Round answer to 2 decimal places, e.g. 52.75.) $ Save for Later Attempts: 0 of 1 used Submit